.app{
	width: 100%;
	height: 100vh;
	background-color: #ffffff;
	position: relative;
	display: flex;
	justify-content: center;
	align-items: center;
}
.abtn57{
	width: 140px;
	height: 46px;
	list-style: none;
	text-decoration: none;
	display: flex;
	justify-content: center;
	align-items: center;
	background: #457356;
	position: relative;
	cursor: pointer;
	border-radius: 23px;
	overflow: hidden;
}
.btn57,.bg57{
	font-size: 16px;
	font-weight: bold;
	letter-spacing: 2px;
	color: #ffffff;
}
.bg57{
	position: absolute;
	text-shadow: 90px 0 #fff, -90px 0 #fff,-180px 0 #fff;
	animation: effx57 1.2s linear infinite;
	display: none;
}
@keyframes effx57{
	to{
		transform: translateX(90px);
	}
}
.abtn57:hover .bg57{
	display: block;
}
.abtn57:hover .btn57{
	display: none;
}